ACE (Architectural Ceiling Element) Series ceiling speakers combine elegant, modern style with outstanding audio performance. The stealthy micro flange grilles have a thin (0.15-Inch) trim, giving the ACE speakers a clean and sleek appearance that seamlessly integrates into any design space. Step-up features include contour switches that allow you to tailor the bass and treble as well as a pivoting silk dome tweeters. The ACE Series may be well hidden but the outstanding sound quality will be very obvious.